Because then your endpoint is the standardized kubernetes rather than ECS.

Also I don't think you can use Kubernetes logic with ECS

Finally I think with ECS you have quite the vendor lock in.

Having deployed Dockerized services to ECS and Azure App Service, doing it from scratch twice is still easier than figuring out k8s.

If you don't know k8s, sure. But if you have someone who does, EKS makes more sense.

Sure, but -- if you're reading tutorials to learn yourself enough k8s to do damage, as provided in the link we're commenting on -- you don't know k8s. Parent is a reasonable question for this thread.

You can host your kubernetes cluster anywhere. Or multiple places (as in you can host both at azure and AWS or your own data center and Google etc).

I'm not a fanboy of kubernetes, I think it makes some really trivial things stupidly complex, but avoiding vender lock in is huge. It can be massively better but oh well.

I like and use ECS, but it lacks the tooling and ecosystem around Kubernetes.